2 He isn't a doctor.
3 My name isn't Silvia.
4 She isn't married.
5 His address isn't 10 Downing Street.
6 You aren't 23.
2 He isn't a doctor;
3 My name isn't Silvia;
4 She isn't married;
5 His address is not 10 Downing Street;
6 You are not (aren't) 23.
2 He isn't a doctor.
3 My name isn't Silvia.
4 She isn't married.
5 His address isn't 10 Downing Street.
6 You aren't 23.
2 He isn't a doctor;
3 My name isn't Silvia;
4 She isn't married;
5 His address is not 10 Downing Street;
6 You are not (aren't) 23.